Quote worksheet calculator

Quote worksheet calculator technical guide

Use this calculator when the estimating task is to combine material cost, labour hours, labour rate, other cost, margin and GST into one worksheet total. It keeps each row visible so a reviewer can see whether the result is driven by material, labour, margin or the GST setting.

This page is intentionally a worksheet. It does not decide scope, tax treatment, supplier validity, productivity or business policy. The calculator uses the numbers entered on screen and returns a subtotal, margin amount, subtotal ex GST, GST amount and total inc GST.

Quote Worksheet Use Cases

A strong worksheet separates material, labour and other cost. A weak worksheet hides everything inside one lump sum and makes it hard to see whether the labour basis, material cost or margin is the real driver.

Input Responsibility

The calculator does not know whether a supplier price has expired, whether the scope changed, or whether a labour allowance reflects current access conditions. Those assumptions belong with the estimate basis.

Review Workflow

1. Enter a quote reference that matches the estimate or variation row.
2. Enter material cost before GST.
3. Enter labour hours and the labour rate used for this worksheet.
4. Add other cost allowances that should sit in the same row.
5. Enter the margin percentage and GST percentage.
6. Review the cost subtotal, margin amount, GST amount and total inc GST.
7. If the margin review state appears, check the material, labour and overhead basis before using the total.

This workflow keeps the arithmetic clear without turning the page into a full estimating workflow. Use the labour-hours calculator first when the labour quantity itself needs its own calculation.

Worked Australian Examples

The examples use Australian dollars, GST language and metric project estimating context. They do not replace project scope review or tax advice.

Boundary With Related Tools

Use the material markup and GST calculator when the question is one material line rather than a whole worksheet. Use the labour-hours calculator when labour hours are not yet known. Use the cable cost and quantity calculator when material quantity still needs a takeoff row.

Australian Estimating Boundary

Electrical estimating can be affected by drawing revisions, supplier validity, freight, site access, supervision, commissioning, shutdown windows, tax treatment and business margin policy. This calculator does not judge those inputs. It calculates from the values entered and gives a review prompt when the margin is below the worksheet threshold.

Keep the exported record with the estimate basis. Recalculate when labour hours, material pricing, GST treatment, project scope or margin policy changes.

Stop Points

• Material cost is copied from an old supplier value.
• Labour hours are entered without a documented productivity basis.
• Other cost hides major freight, plant or access constraints.
• Margin is below the review threshold and has not been checked.
• GST treatment is uncertain for the way the estimate will be used.
• Scope, drawings or site conditions changed after the worksheet was prepared.